A046817 - OEIS

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A046817 as a triangular array

1

1 2

1 6 5

1 12 32 15

1 20 110 175 52

1 30 280 945 1012 203

1 42 595 3465 8092 6230 877

1 56 1120 10010 40992 70756 40819 4140

1 72 1932 24570 156072 479976 638423 283944 21147

1 90 3120 53550 487704 2350950 5660615 5971350

A046817 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`	`90`
`5`	`32`	`110`	`280`	`595`	`1120`	`1932`	`3120`
`15`	`175`	`945`	`3465`	`10010`	`24570`	`53550`
`52`	`1012`	`8092`	`40992`	`156072`	`487704`
`203`	`6230`	`70756`	`479976`	`2350950`
`877`	`40819`	`638423`	`5660615`
`4140`	`283944`	`5971350`
`21147`

A046817 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`	`90`
		`5`	`32`	`110`	`280`	`595`	`1120`	`1932`	`3120`
			`15`	`175`	`945`	`3465`	`10010`	`24570`	`53550`
				`52`	`1012`	`8092`	`40992`	`156072`	`487704`
					`203`	`6230`	`70756`	`479976`	`2350950`
						`877`	`40819`	`638423`	`5660615`
							`4140`	`283944`	`5971350`
								`21147`

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Last modified June 4 19:35 EDT 2024. Contains 373102 sequences. (Running on oeis4.)